我如何在我的 kivy 程序中使用 json api [英] how do i use json api in my kivy program

问题描述

您好，我目前正在阅读 O'Reilly 的《在 Kivy 中创建应用程序》，有一个示例我无法使其正常工作，因为在他写这本书时 openWeatherMap 不需要 api 密钥 (APPID)，但现在它需要，而且我是一名新手程序员，不知道如何更改代码以使其正常工作.

hi I'm currently reading O'Reilly's Creating Apps in Kivy and there's an example that I can't get it to work correctly because by the time he wrote the book openWeatherMap didn't require api key (APPID) but now it does and I'm a novice programmer and don't know how to change the code so it would work.

这是main.py源代码:

this is the main.py source code:

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import ObjectProperty
from kivy.network.urlrequest import UrlRequest
import json

class AddLocationForm(BoxLayout):
    search_input = ObjectProperty()

def search_location(self):
    search_template = "http://api.openweathermap.org/data/2.5" + "find?q={}&type=like"
    search_url = search_template.format(self.search_input.text)
    request = UrlRequest(search_url, self.found_location)

def found_location(self, request, data):
    data = json.loads(data.decode()) if not isinstance(data, dict) else data
    cities = ["{} ({})".format(d['name'], d['sys']['country'])
        for d in data['list']]
    self.search_results.item_strings = cities
    print("
".join(cities))

class WeatherApp(App):
pass

if __name__ == '__main__':
WeatherApp().run()

这是weather.kv源代码:

and this is weather.kv source code:

AddLocationForm:

<AddLocationForm>:
    orientation: "vertical"
    search_input: search_box
    search_results: search_results_list
    BoxLayout:
    height: "40dp"
    size_hint_y: None
    TextInput:
        id: search_box
        size_hint_x: 50
    Button:
        text: "Search"
        size_hint_x: 25
        on_press: root.search_location()
    Button:
        text: "Current Location"
        size_hint_x: 25
ListView:
    id: search_results_list
    item_strings: []

代码很简单，您在文本框中输入城市名称并点击搜索，它会通过显示收到的名称来确认.

the code's simple you put a city name in textbox and hit search and it confirms it by showing the name it recieved.

推荐答案

好吧，不知道是不是迟到了，但是最近买了这本书，我也发现自己被这个问题卡住了.在谷歌搜索这个问题时，我偶然发现了你的问题以及这本书的 O'Reilly 链接.这就是作者对这个问题的看法:

OK, so I don't know if I'm late or not but having bought this book recently, I too found myself stuck exactly in this problem. Upon Googling this issue, I happened to stumble upon your question as well as O'Reilly link for this book. This is what the author had to say about this problem:

我已确认问题；openweathermap 已更改他们的查询过程和书中的网址现在都坏了.这将彻底破坏所有新读者的读者体验；我们需要做一个更新，也许应该谈谈第二版."

"I've confirmed the issue; openweathermap has changed their query process and the urls in the book are now all broken. This is going to utterly ruin the reader experience for all new readers; we'll need to do an update and should maybe talk about a second edition."

幸运的是，一位好心人找到了解决这个问题的方法.但为了做到这一点，您必须首先创建一个免费的开放天气帐户.创建帐户后，您将获得一个 API 密钥.它会在您的个人资料中.

Luckily a good Samaritan found out the solution to this problem. But in order to do so you must first create a free Open Weather account. After creating the account, you'll get an API key. It'll be in your profile.

所以，现在这段代码:

search_template = "http://api.openweathermap.org/data/2.5" + "find?q={}&type=like"

变成:

search_template = "http://api.openweathermap.org/data/2.5/find?q={}&type=like&APPID=" + "YOUR_API_KEY"

这对我有用.我知道我迟到了 3 个月，现在你可能已经得到了答案，但我认为这对遇到类似问题的人很有用，他们的谷歌结果会将他们带到这个地方.

This worked for me. I know I'm 3 months late and probably by now you'd have gotten your answer, but I thought this will be useful for those who run into similar problems and their Google result will bring them to this place.

这篇关于我如何在我的 kivy 程序中使用 json api的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！